Automatic delivery for die-presses



J. E. WOODBUBY. AUTOMATIC DELIVERY FOR DIE PRESSES. 'APPLICATION nun 0m.26, 1916. RENEWED-JULY 9, 920.

1,374:,1 31 Patented Apr 5, 1921.

4 SHEETS-SHEET I.

J. E. WOODBU'RY.

AUTOMATIC DELIVERY FOR DIE PRESSES. APPLICATION FILED OCT. 26, 19 16.RENEWED Junk 9,1920.

1,374.131 Patented Apr. 5, 1921.

4 SHEETSSHEET 2.

fiazzz cia/z/a Z. 77002254 Wness 9/ a J.- E. WOODBURY.

AUTOMATIC DELIVERY FOR DIE PRESSES.

APPLICATION FILED OCT. 26. I916- RENEWED JUL! 9.1920. I

1,374, 1 3 1 Patented Apr. 5, 1921.

4 SHEETS-SHEET 3.

- 9 at y r L" WWJQL J. E. WOQDBURY.

' AUTOMATIC DELIVERY FOR DIE PRESSES.

APPLICATION FILED OCT. 26, 1915- RENEWED JULY 9, [920. 1,374,131,Patented Apr. 5,1921.

4 SHEETS-SHEET 4.

0 7& 00 (0' Witness: gmwr j JOHN E. WOODB'URY, 0F VIORCESTER,MASSACHUSETTS.

AUTOMATIC DELIVERY FOR DIE-PRESSES.

Specification of Letters Patent.

Patented Apr. 5, 1921.

Application filed October 26, 1916, Serial No. 127,960. Renewed July 9,1920. Serial No. 395,121.

To all whom it may concern:

Be it known that 1, JOHN E. Woonnunr, a citizen of the United States,residing at orcester, in the county of Worcester and State ofMassachusetts, have invented a new and useful Automatic Delivery forDie- Presses, of which the following is a specification.

The principal objects of this invention are to provide a practicalmachine which can be applied to die printing presses of the type inwhich the die is inked and wiped automatically, and which can be usedeventually as a link in a system in which sheets shall be fedmechanically to a machine of this type and then taken from it and placedin racks or the like, making automatic the entire routine operation ofproducing die stamped sheets. as for example letter headings; to providefor keeping the sheets separate as is necessary in this class ofprinting; to provide a novel mechanism whereby the sheets are taken outdown through the infeeding mechanism, turned over, and. laid down on amoving conveyer so as to he kept separate at all times because theprinted surface must not be allowed to come in contact with anything; toprovide delivery grippers with means by which they are held shut whilethe sheet is being turned over, and by which they are held open 011 thereturning motion; to provide a novel combination ofthese and otherfeatures of the machine, including side and front registers, and meansfor feeding the sheets into the press, so as to necessitate theperformance of the various functions in a positive and accurate mannerthroughout the operation of the machine.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which- Figure 1is a side view of a feeding device constructed in accordance with thisinvention and adapted to be applied to. an ordinary die pressdetachably;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1, showing the partsin another position;

Fig. 3 is a sectional view on the parallel line. 33 in Fig. 1, showingthe parts in a third position;

4: is a sectional plan on the line 4.-4

of Fig. 2, showing the parts in the position shown in Fig. 2;

Flg. 5 is an enlarged side view of the delivery gripper construction;

Fig. 6 is a plan of part of the same as indicated by the arrow 6 in Fig.5;

Fig. 7 1s a further enlarged sectional view on the line 7-7 of Fig. 5;

Fig. 8 is an enlarged side view of the feed ng in gripper from theinside, and

Fig. 9 18' a plan of part of the connections for operating the carriage.

Although cylinder and platen presses and similar types of printingmachines are often provided with mechanical feeding devices, the diepress of the above mentioned type is of such a nature that it is alwaysfed by hand in practice and the sheets taken from it in the same manner,so that each sheet has to be handled twice by the operator. This is dueto several reasons. On account of the very high pressure used in theprinting, the press itself has to be of a heavy massive build whichreduces the opportunity to place the sheet in register and to hold it inplace and very much restricts the possible paths that the sheet may takein the operations of feeding in and withdrawing the same. Furthermorethe printed surface must not be touohedfor some hours after the work isprinted, and this makes necessary the turning of the sheets over andlaying them out in such way that the printed surfaces are exposed.

Referring now to the drawings, I will describe the mechanism shownherein, although it is to be understood that 1 do not limit myself tothe particular features of construction herein shown and described.

The machine is shown in the drawings as having a stationary frame work10, which is provided with brackets 11 by which it is supported ondowels 12 carried by an intaglio die press A which is ordinarily fed byhand. The frame rests on these brackets and its weight holds it againstthe press with no other support than that described.

The machine is provided with a main shaft 13 receiving power through asprocket wheel 1d located upon it from the main shaft of the press orfrom any other suitable source. This main shaft, through a chain 15 andsprocket wheels 16 and 17, drives a parallel shaft 18 near the top ofthe frame,

which in turn is provided with a large sprocket wheel 19 and chain 20driving a third shaft 21 also parallel with the other two.

The shaft 18 is provided with a crank 22 beyond the large sprocket wheel19 which operates a sliding rack 23, and by means of a pinion 24: drivesa sheet-separating device B to deliver sheets therefrom under its rubbersurfaced grooved roller 25. This sheetseparating device is not describedor illustrated in detail because it is not apart of this invention,being a well-known machine. The sheets O are advanced from theseparating device 13 to the press A by tapes 29 and then by areciprocating frame 89, and are withdrawn from the press A by a swingingframe 117 and delivered to the feeding belts 144.

The shaft 21 by means of a pair of gears 26 drives a shaft 27 locatedclosely adjacent thereto on which are a pair'of rubber rollers 28 forreceiving the sheets from the sheetfeeding device and forcing them outon the feed tapes 29. These rolls and the shaft on which they aremounted are carried by swinging brackets 30 pivoted on the shaft 21 andoverhanging the same, so that they are held down against a pair of idlerrolls 31 on parallel shaft 310 by gravity.

On the shaft 21 is a pulley 32 which, by means of a belt and pulleydrives another shaft 33, which is provided with roliers 3i thereon fordriving the series of endless feed tapes 29 on which the sheets aredelivered by the gravity rollers 28. These feed tapes are locatedbetween a series of slats 35 mounted in stationary position onstationary cross-bars, which constitute part of the frame. They areconnected with these cross bars by adjusting and supporting screws 36and support idle rollers 37 carrying the tapes 29. These slats runbeyond the ends of the tapes to support the front end of the sheet inthe registering position. The tapes may be made of any suitablematerial. All the other mechanism of the machine is operated by thethree shafts 13, 18 and 21.

On the shaft 18 is an end register gage cam 40 which in itscomplete'rotation oscillates an arm 41 and a shaft 12 to which it is fixed, thearm being provided with a roller 43 for engaging the cam. This shaft 42is mounted in hearings on brackets 44 carried by studs 4 10 on the frame10 and has a pair of arms 15 carrying a cross-bar s This is providedwith an upwardly extending arm 38 from which a spring 17 is connectedwith the shaft 18 so as normally to hold up this cross-bar 46 and theroller 43 yieldingly against the cam. The cross-bar i6 is provided witha plurality of sheet metal arms 39 which are upturned at their ends toguide the. sheets of paper under them and are spaced above the slats 35.At their outer ends, two of these arms are provided with adjustablemembers 41-8 having downwardly extending hooked ends 19 constituting endgages for registering the sheets. It will be obvious that the cam 40raises and lowers these end gages periodically.

The shaft 18 is also provided with a side register gage cam 50 arrangedto engage a cam roller 52 on an arm 53 fixed to an oscillating rod 54carried by brackets 51 on the frame. A spring 55 coiled on this rodholds the roller toward the cam. This rod is provided with two radialfixed arms 56 which are connected by links 57 with arms Q 58 extendingfrom two vertically oscillating rods 59 carried by brackets '60 on theframe. The bottom ends of these rods 59 are bent into horizontalposition, and their ends are bent inwardly to form side registeringgages 61. It will be obvious that the continued rotation of the cam, 50periodically moves -these side'gages simultaneously inwardly to registerthe paper sidewise.

The gripperswhich first grlp the sheet and take it from the tapes willbe descrlbed later,

as they constitute part of a mechanism which I will describe as a whole.

On the main shaft 13 is a carriage operating crank 62 which is pivotallyconnected with a rod 63 passing through a perforated lug 64: on an arm65 fixed to the .end of a shaft 66 carried at the top of the frame. Thisrod is provided with a spring 67 fixed to it and coiled around it andbearing against the bottom of the lug 64: and is provided with a collar68 fixed to it above the lug to cause the arm 65 to move positively withit through a part of its motion.

On the shaft 66 is another arm 69 provided with a stud 70 fixed to itand having 7 upon it a cam 71 provided with a concentric surface forengaging a roller 72 on a stud 73. This .stud is carried by a pair oflinks 7 constituting a frame pivoted on a cross rod 5. This stud 73 isprovided with a rod 76 projecting radially from it and having a spring760 upon it pressing against the stud 70. On the opposite side of thisstud the rod has nuts tending to keep the roller against the cam 71 inall positions of the parts. This rod is fixed to and constitutes part ofa frame 77 which is pivoted on a rod 78 carried by the main frame 10. Atits lower end the two sides of this frame are connected with a pair oflinks 79 which are pivotally connected with two uprights 82 of acarriage 80 that slides on horizontal ways .81 supported by the machineframe. This carriage is provided with two pairs of uprights 82 and 85carrying four supports 83 that ride on these tracks. The rear supportsare pivoted and the front ones fixed. At the end of the carriage towardthe sheet separating device two of these uprights 82 are provided withoutwardly projecting studs 84 extending under the tracks to prevent thisend of the frame from being lifted. It will be seen that the operationof the crank 62 reciprocates this carriage on its tracks.

At the end of this carriage toward the press two of the uprights 85 arebent inwardly at the bottom near the front, and to them are riveted twomembers constituting a horizontal skeleton supporting frame 86 forsupporting the sheet during part of its motion. These uprights 85 alsocarry a transverse shaft 87 to which a spring 88 is connected that isalso connected with, a pin or screw 89 on one of a pair of arms 90pivoted to the carriage near the rear end of the same to assist inlifting these arms. The two arms are also connected with this shaft bytwo pairs of toggle levers 91, so that they necessarily move together.On the end of these arms they are provided with inwardly projectingplates 92 having rubber studs 93 upon them. These are adapted to comedown on the frame 86 and constitute feed ing grippers for holding thepaper and carrying it along with the carriage.

These toggle joints are operated by a feed ing gripper cam 94 located onthe shaft 18. This cam operates a roller 95 on a lever 96 pivoted on theshaft 66 and connected by a link 97 with an arm 98 on the shaft 78. Thisarm extends beyond the point at which it is connected with the link andis provided with a stud by which it is connected with the arm 96 througha spring 99 that keeps these two arms as near together as possible underits impulse. The shaft 78 is also provided with an arm 100 which has aheaded stud 101 upon it that is perforated to receive a rod 102 pivotedat its lower end to an arm 103 on the shaft 87 to which the togglelevers are fixed. This rod is provided with two pins 104 above and belowthe stud and consequently is operated by the oscillation of this shafttoward the end of its motion in each direction, but is not operated byit at all through the intermediate part of its motion. This results inbringing the toggle levers down so as to hold the grippers 93 locked intheir gripping position, as the toggle joints are turned slightly beyondtheir straight position against stops 105. At the other end of itsmotion it pulls them back suddenly to fully open position and they areheld there against accidental closing.

On the shaft 13 there is a carriage lifting cam 106 which operates aspring-pressed arm 107 on a shaft 108 which, by means of arm and link109 operates an oscillating frame 110 pivoted on a rod 210. This frameis provided with two inwardly extending pins 111 for the purposeofengaging in notches 112 on the uprights 85 and raising acts normally topull the roller away from the cam. This spring is not for that purpose,however, but to counter-balance the weight of the parts operated by thislever. The lever is pivotally connected by a link 116 with a frame 117pivoted on a horizontal rod 118. At its end farthest from this pivotrod, this frame 117 is provided with a shaft 119, on which there isfixed a sprocket wheel 120 engaging a sprocket chain 121 which at oneend is connected to an arm 122 which is pivoted to the frame 10 on aneccentric 123 for adjustment. At the other end the chain is connected byspring 124: with a stationary projection on the frame 10.

It will be seen, therefore, that when the cam 113 comes down to aposition to cause this frame 117 to move about its pivot, the chain willcause the sprocket wheel to have a certain definite turning motion, andthe shaft on which it is fixed also. This mechanism furnishes a veryflexible arrangement, because by changing the position at which the endsof the chain are fixed the motion can be varied as desired. As shownherein the shaft 119 is turned slowly at first and rapidly later. Onthis shaft are fixed two L-shaped arms 125 which support a cross rod 126fixed tothem and carrying a pair of parallel sheet supporting bars 127connected by a cross piece which serves as a support for the sheets incertain positions of the parts. The arms 125 also carry a shaft 128which is provided with a pair of projecting gripper fingers 129 that areadapted to come into contact with these bars and grip a sheet of paperthereto. This shaft 128 is operated in the following manner 0n the shaft13 is a delivery gripper cam 130 engaging a roller 130 on the lever 131which is provided with a spring to keep the roller in contact with thecam. A link 132 is connected with the opposite end of this lever andwith an arm 133 pivoted to the shaft 118 which carries this frame. Thisarm 133 is connected by link 13d with an arm 135 fixed on the shaft 119.Also on this shaft are two metal disks 136, one fixed and the otheradjustable, but both turning with the shaft. They are preferablyroughened on their inner surfaces and between them is located a disk 137which is free to turn on this shaft, but a pair of leather washers 138are mounted on either way the grippers are operated during the motion ofthis pivoted frame. Also on the end of this shaft 128 is a stop pln 149for engaging the link 140 and limiting the motion of the shaft 128.

'Although not constituting part of this invention, the frame 10 is shownas provided with a fixed rod 142 on which are loose grooved pulleys 143carrying feeding belts 144 for taking the paper sheets C away from themachine; This can be operated in any desired way, but is shown as run bycrossed belts 145 from grooved pulleys 146 fixed on the shaft 13. Thebelts 144 and 14-5 run on the same pulleys 143.

The operationof the machine is as follows :Starting with the parts inthe position shown in Fig. 1, the rack 23 rises as the shaft 18, turnsin the direction of the arrow and causes the feed roll 25 to feed therear sheet of paper C out of the separatin device under the rolls 28.The carriage at this time goes to the extreme end of its stroke asindicated in Fig. 2, but let it be assumed that it does not carry asheet as the machine is supposed to be just starting. The delivery frame117 starts at the bottom without a sheet as in Fig. 1 and moves up tothe position shown in Fig. 2.

The continued rotation of the main shaft causes the sheet C to continueto feed out as the carriage starts back. The sheet having reached aposition nearly under the front gages 49 these are lowered by the actionof the cam 40 and the sheet 0 is end registered. These front or endgages engage its end and stop its continued motion forward, which atthis time is not controlled positively but is caused by the operation ofthe tapes 29 on which it rests. It is stopped at this point, therefore,and all sheets coming into this position are thus brought to a definiteposition at this time.

As the main shaft continues to rotate, the carriage comes back, and whenits end uprights have passed back of the side gages 61, the cam 50 actsto bring them in from the position shown in Fig. 4 so as to register'the sheet at both sides and get it into a central position. As soon asthis is accomplished, the carriage 80 now being in its extreme positionat this end of the stroke, the gripper cam v94 acts to straighten outthe toggle levers 91 and bring the feeding grippers 93 down into contactwith the sheet and grip it to the flat frame 86 at a distance from itsedges.

Then the cam 40 raises the end gages and the side gages draw back; Thecrank 62 on the shaft 13 now operates to pull down on the rod 63positively moving the bell-crank 65-69 and causes the cam 71 to push.the swinging arms 77 toward the press and take the carriage with it,also of course taking thesheet C. It is just at this instant that thenext sheet C starts out of the sheet separating device.

Continuing thisv motion the parts come to the position shown in Fig. 2,in which the first sheet C enters the press ready to receive theimpression and the second sheet C gets well started out under the rolls28. Just before the cam 71 turns soasto allow the roll 72 to drop fromthe high part of it, the uprights 85 come to their extreme position sothat the pins 111 enter the notches 112 therein. This is shown in F ig.2. Ju% at that instant the cam 106 pushes its cam roller out to theextreme end of its stroke and raises the frame 110 which carries thepins 111, thus lifting theend of the carriage about the pivots withwhich it is connected with the supports 83. Thus the sheet moves upagainst the counter a just before the impression is made, in thepress.lVhile the parts are in this position, the second sheet C moves almostentirely out of the sheet separating mechanism, and after the die movesaway from the sheet, the cam 94 comes around to a position to allow thespring 99 to pull the arm 100 up and thus draw up the rod 102 and breakthe toggles so as to raise the feeding in grippers and release the sheetC.

During the operation above described the oscillating frame 117 has beenmoving idly, but now it comes into position to act on sheet C. W hen theparts are in the position shown in Fig 2 as has been described, thesheet support, consisting of the bars 127, is located in inclinedposition at its xtreine upward point of travel under the open space thatis now left between the sheet supports 35 and86 so as to receive the endof the sheet that has been at the rear heretofore. It will be noted thatthe frame 86 is shorter than the sheet C and is bent down at its end soas to let the end of the sheet drop down on the bars 127. So when theprinting operation is completed and the sheet is released, this endrests on these bars 127. Just this time the cam 130 actuates the rod 134so as to. turn the delivery gripper fingers 129 and cause them to gripthis end of the sheet against the supporting bars 127.

It is to be understoodthat the position of this frame 117 -is, ofcourse, controlled by the cam 113 and the bars 127 by the sprocket andchain connection. As the frame moves down the friction holds thegrippers shut against advancing bars 127 and then the action of the cam130 through the friction causes the ripper fingers to release the sheetwhen it is in a substantially horizontal position with its forward endresting on the belts after it has passed through the position shown inFig. 3. Then the frame, having reached the end of its downwardlyswinging motion, starts back and reaches the position shown in Fig. 1,just after the next sheet C has been gripped and advanced beyond the endgages. The continued operation of the parts brings the second sheet upto printing position and the oscillating delivery frame back up to theposition for the second grippers to grip that sheet and deliver it.

In this way it will be seen that the principle now used in hand feedingthis class of machines is retained; namely, that one sheet is being fedinto the press while another is being withdrawn; that the sheets areproperly registered and positively gripped before the impression is madeand the grip retained until impression is completedgthat the rise of thedie in making the impression in this type of die press is accommodatedautomatically by lifting the carriage, that as soon as the impression ismade the sheet is turned over in a very simple manner so that itsfreshly printed surface cannot come into contact with another sheet orany part of the machine and is delivered right side up on the travelingbelts which are timed to travel just fast enough so that the impressionwhich is at the forward end of the sheet at this time is left exposed.In other words, the sheet is always deposited on another sheet with itsadvance edge below the lowest part at which the impression is made.Furthermore a machine is provided in which the sheets are kept separateat all times; in which the feeding grippers positively snap on "or offand remain locked in either position; in which the second or deliverygrippers are operated by a friction arrangement that permits them to beshut by the turning action of the feeding-out frame and held open on thereturn motion and in which the supports for the sheets are separated atthe time of impres' si on so as to allow the rear end of the sheet todrop down to a point at which the delivery grippers oan grip it and turnit down and over, so as to deposit it the other side up.

It will be seen that this machine can be applied permanently to a diepress as shown, although shown as detachably connected, and that it isso connected with it that it can serve as a link in an entirelymechanical plant in which the sheets are fed to the press, delivered andthen stacked up without hand operation of any kind. The sheet feedingmechanism for feeding the sheets toward the press is not claimed hereinby itself, as it constitutes part of my divisional application, filed onthe date on which this case is renewed, and entitled Sheet feedingmachine, Serial Number 395,107.

Although have illustrated and described only a single form of themachine and shown it as adapted for a die-press of a particular type, Iam aware of the fact that many modifications can be made in theconstruction and arrangement of parts, and that it will be designeddifferently when applied to die presses of other constructions. Therefore, T do not wish to be limited in these respects, but what I do claimis:

l. The combination with a die press, of means for advancing the sheetsto the press, means to change the relative elevation of the sheets inthe press as the impression is made, the advancing means having asupporting frame for the sheets adapted to support the forward ends ofthe sheets only, said supporting frame being movable to space it fromsaid advancing means during the impression to permit the rear end of asheet to drop down between them.

2. The combination with a die press, of means for supporting the sheets,and a supporting frame for the sheets adapted to support the forwardends of the sheets only, said supporting frame being movable to space itfrom said support during the impressien to permit the rear end of asheet to drop down between them.

3. The combination of a supporting frame for sheets adapted to hold theforward ends of the sheets only, said supporting frame being movable toa position to permit the rear end of a sheet to drop down, andsupporting bars in position below to receive the rear end of the sheet.

4:. The combination of means for advancing sheets to a press, means forchanging t 11G elevation of the sheets in the press as the impression ismade, stationary means for supporting the sheets, the advancing meanshaving a supporting frame for the sheets and adapted to hold the forwardends of the sheets only, said supporting frame being movable to space itfrom said stationary support before the impression to permit the rearend of a sheet to drop down between them, and supporting bars inposition below the space between said supports to re ceive the rearendof the sheet.

5. The combination of stationary means for supporting sheets until theyare gripped, a sheet supporting frame for the sheets after they aregripped adapted to hold the forward end of the sheet only, means formoving said supporting frameto space it from the stationary support topermit the rear end of the sheet to drop down between them, supportingbars movable to a position to re ceive the rear end of the sheet, and adelivery gripper movable with the last named supporting means forgripping the end of the sheet. 7

6. The combination with a die press, of means for advancing the sheetstoward the press, means for raising the gripping means 139 to elevatethe sheets in the press as the impression is made, stationary means forsupporting the sheets until they are gripped, a supporting frame for thesheets after they are gripped adapted to hold the forward end of thesheet only, means for moving said supporting frame to space it from saidstationary support before the impression to permit the rear end of thesheet to drop down between them, supporting bars movable to a positionbelow the space between said supports to receive the rear end of thesheet, the last named supporting bars being provided with a deliverygripper for gripping the end of the sheet, and means for turning thedelivery gripper and its support over so as to bring the sheet into aposition right side up.

7. The combination of means for supporting sheets, a supporting framefor the sheets adapted to hold the forward end of the sheet only, meansfor moving said supportlng frame to space it from said support to permitthe rear end of the sheet to drop down between them, supporting barsmovable to a position to receive the rear end of the sheet, a deliverygripper for gripping the end of the sheet, and means for turning thedelivery gripper over so as to bring the sheet into a osition right sideup.

8. Tie combination of means for supportingsheets, a supporting frame forthe sheets adapted to hold the forward end of the sheet only, saidsupporting frame being movable to space it from the first named supportto permit the rear end of the sheet to drop down between them,supporting bars movable to a'position to receive the rear end of thesheet, a delivery gripper for gripping the end of the sheet, means forturning the delivery gripper and the supporting bars over so as to bringthe sheet into a position right side up to deliver it, and a carrier inposition to receive the sheets therefrom.

9. The combination of a supporting frame for sheets adapted to hold theforward end of the sheet only, supporting bars movable to a position toreceive the rear end of the sheet, a delivery gripper for gripping theend of the sheet, means for turning the delivery gripper and thesupporting bars over so as to bring the sheet into a position right sideup to deliver it, and a carrier in position to receive thesheetstherefrom.

10. In a machine of the character described, the combination of a paperfeeding carriage having a frame at its forward end for supporting thefront end of a sheet, said frame being open at the rear and beingadapted to allow the rear end of the sheet to hang down from it, adelivery frame, a pair of supporting bars carried by said delivery frameand movable thereon, means for moving said frame to a position under thecarriage, and means for simultaneously moving said supporting bars intoposition under the frame on the carriage to receive the rear end of thesheet.

11'. In a machine of the character described, the combination of areciprocating paper feeding carriage having a frame at its forward endfor supporting the front end of a sheet, said frame being adapted toallow the rear end of the sheet to hang down from it, an oscillatingdelivery frame. a pair of supporting bars carried by said delivery frameand movable thereon, means for swinging said frame up to a positionunder the carriage, means for simultaneously swinging said supportingbars outwardly into substantially horizontal position under the frame onthe carriage to receive the rear end of the sheet, and a pair ofgrippers carried by said oscillating frame for gripping the sheet on thesupporting bars carried thereby. I

12. In a machine of the character de scribed, the combination of areciprocating frame for supporting the front end of a sheet, said framebeing open at the rear and being adapted to allow the rear end of thesheet to hang down from it, an oscillating delivery frame, a pair ofsupporting bars carried by said delivery frame and movable thereon,means for swinging said frame up to a position under the carriage, meansfor simultaneously swinging said supporting bars outwardly intosubstantially horizontal position under the frame on the carriage toreceive the rear end of the sheet, and means whereby said oscillatingframe is lowered with the sheet on said supporting bars and saidsupporting bars re versed during the lowering motion. 7

13. In a machine of the character de' scribed, the combination of aframe mounted to oscillate on ahorizontal axis, a shaft carried by saidframe at a distance from said axis, a frame pivoted on said shaft andprovided with supporting bars for a sheet of paper, a wheel fixed withrespect to said pivoted frame, and a belt passing over said wheel andhaving its ends fixed, whereby as the oscillatable frame moves about itspivot the wheel will be turned by the beltand said supporting bars swungabout the axis of the shaft.

14. In a machine of the character described,- the combination of a framemounted to oscillate about an axis, a shaft parallel with said axismounted thereon, sheet supporting bars on said shaft. a sprocket wheel 7fixed with respect to said bars and mounted to turn on the axis of saidshaft, a chain passing over said sprocket wheel, one end of which is.connected with a fixed art of the machine, and a spring connecting theother end of the frame with a fixed part of the machine, the two ends ofthe chain being located on opposite sides of said oscillatable frame,whereby as the frame swings the sprocket wheel and sheet supporting barswill also turn about said shaft as a center.

15. In a machine of the character described, the combination of anoscillating frame, a pair of supporting bars carried by said frame andcapable of swinging about an axis thereon, a wheel fixed with respect tosaid sheet supporting bars, and means for turning said wheel on its axisas the frame oscillates, said means being operated by the movement ofthe frame.

16. In a machine of the character described, the combination of anoscillating frame, a pair of supporting bars carried by said frame andcapable of swinging about an axis thereon parallel with the axis onwhich the frame swings, a wheel fixed with respect to said sheetsupporting bars, means for turning said wheel on its axis as the frameoscillates by the movement of the frame, a pair of grippers pivotallymounted with respect to said bars for gripping a sheet thereto, andmeans operated independently of said frame for swinging the grippers.

17. In a machine of the character described, the combination of anoscillating frame, a pair of supporting bars carried by said frame andcapable of swinging about an axis thereon, a wheel fixed with respect tosaid sheet supporting bars, means for turning said wheel on its axis asthe frame oscillates, said means being operated by the movement of theframe, a shaft supported by said bars having a pair of grippers thereonfor gripping a sheet to the bars, an eccentric stud on the end of saidshaft, a driving shaft having means for oscillating said frame, andmeans on said driving shaft for controlling the oscillation of saideccentric stud and the operation of the grippers.

18. In a machine of the character described, the combination of anoscillating frame, a pair of supporting bars carried by said frame andcapable of swinging about an axis thereon parallel with the axis onwhich the frame swings, a sprocket wheel fixed with respect to saidsheet supporting bars, a chain for turning said wheel on its axis as theframe oscillates, whereby said bars are operated by the movement of theframe, a shaft oscillatably mounted with respect to said bars having apair of grippers fixed thereon for gripping a sheet to the bars andprovided with an eccentric stud, a driving shaft, means connected withsaid driving shaft for swinging the oscillatable frame, a link motioncarried by the oscillating frame, means pivoted on the axis of saidframe for operating the link motion, said means being controlled fromsaid driving shaft, and a friction device operated by the link motionand connected with said eccentric stud for operating the grippers.

19. In a machine of the character described, the combination of a shaft,a frame pivoted on an axis parallel with the shaft, means connected withsaid shaft for oscillating said frame, a pair of sheet supporting barscarried by said oscillating frame, a shaft oscillatably mounted withrespect to said sheet supporting bars and movable therewith and having apair of grippers thereon, a link motion supported by said frame, meansconnected with the first named shaft for operating the link motion, anarm pivoted on said oscillating frame and connected with the linkmotion, a pair of disks mounted to oscillate with the arm, a diskmounted between the first named disks, friction means between the lastnamed disk and the other two, an arm projecting from the central disk,and a link connecting said arm with the oscillatable shaft for operatingit.

20. In a machine of the character described, the combination of a shaft,a pivoted frame, means connected with said shaft for oscillating saidframe about its pivot, a pair of sheet supporting bars carried by saidoscillating frame, a shaft oscillatably mounted with respect to saidsheet supporting bars and movable therewith and having a pair ofgrippers thereon and an eccentric stud, a link motion, means connectedwith the first named shaft for operating the link motion, a pair ofdisks connected to oscillate with the link motion, a disk mountedbetween the first named disks, friction means between the last nameddisk and the other two, an arm projecting from the central disk, a linkconnecting said arm with the eccentric stud on the oscillatable shaft,and a stop pin on the oscillatable shaft for engaging the last namedlink and limiting the motion of the grippers.

21. In a sheet delivery device, the combination of an oscillatableframe, sheet supporting bars pivoted thereon, means for swinging saidbars on their pivot as the frame oscillates, a pair of pivoted gripperson the frame engaging said bars, and frictional means for holding thegrippers against said bars so that the turning motion of the bars tendsto keep the sheets gripped and for holding the grippers open at a latertime.

In testimony whereof I have hereunto affixed my signature.

JOHN E. WOODBURY.

